DatapacksJava
No Generation -Y
Java data pack listed for Minecraft 1.20–26.x. Downloads from the MC Java Mods app on Android.
Removes the generation of -Y in overworld. If there is a cave or lake at Y=0, then the air or liquid will NOT be replaced
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
No Generation -Y
Removes generation below Y=0 in overworld
Applications
- Don't like generation -Y or want to diversify the game
- Lags due to generation below Y=0
Changes
- Removes the generation of -Y in overworld
- The deepslate level starts at Y=32
- Ancient cities and Trial chambers appear at approximately Y=0
Pay attention
- The air of caves and liquids of lakes at Y=0 will NOT be replaced by bedrock
- Structures from experimental functions are not supported
- Trial chambers (1.20.4-1.20.6)
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.20.2, 1.20.3, 1.20.4
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
File checked by MCModsHub
- Downloads as DP.No_Generation_-Y-1.20.2.zip
- Download size: 74 KB
- Download link checked 2 Nov 2026 — working
These come from our own check of the pack file, not from the source page.